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dc.contributor.authorVemulakonda, S. Rao.-
dc.identifier.govdocERDC/CHL TR-01-16-
dc.descriptionTechnical Reporten_US
dc.description.abstractThe U.S. Anny Engineer District, Galveston, has proposed relocating the Gulfintracoastal Waterway (GIWW) north of its present intersection with the Matagorda Ship Channel (MSC), TX, to improve navigation and reduce shoaling in the reach of the GIWW next to the MSC. In this connection, a two-dimensional, numerical hydrodynamic and salinity study was conducted to estimate the impacts of the relocation on circulation and salinity in the Matagorda Bay System. For this purpose, a previously verified Matagorda Bay model of the Lower Colorado River Authority (LCRA) was acquired. The model used the TxBLEND code of the Texas Water Development Board. The LCRA mesh was modified in the vicinity of the GIWW and model results for surface elevation, discharge, and currents were compared with field data acquired in 1997. There was reasonable agreement. Model simulations were next conducted for existing and plan conditions of the GIWW corresponding to six different flow scenarios and results were compared. Monthly-averaged.MSC currents at the new intersection are approximately 20 percent lower, and circulation impacts are small and localized. Salinity impacts are generally small and within 0.4 ppt, except for Lavaca Bay where monthly-averaged salinity is reduced on the order of 0.9 to 1.4 ppt in some months.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers. Galveston District.en_US Conversion Factors, Non-SI to SI Units of Measurement ....vii 1-Introduction….1 The Physical Setting ....1 Previous Studies ....2 Concurrent Studies ....3 Objectives of the Present Study....4 Approach....4 Outline of the Report....4 2--Comparison with Field Data....5 Features of TxBLEND....5 LCRA Model....5 Field Data of 1997....6 ERDC-WES Simulation Results....6 3-Results of Simulations for Determining Impacts ....8 LCRA's Modeling Approach....8 Details of Production Simulations ....8 Results for Circulation....10 Results for Salinity....11 4-Summary and Conclusions....14 References.... 15 Figures 1-28 Tables 1-8 SF298-
dc.format.extent91 pages-
dc.publisherCoastal and Hydraulics Laboratory (U.S.)en_US
dc.relation.ispartofseriesTechnical Report (Coastal and Hydraulics Laboratory (U.S.)) ; no. ERDC/CHL TR-01-16-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThe ERDC Library created this digital resource using one or more of the following: Zeta TS-0995, Zeutcehl OS 12000, HP HD Pro 42-in. map scanner, Epson flatbed.-
dc.subjectSalinity--Texas--Matagorda Bayen_US
dc.subjectHydrodynamics--Texas--Matagorda Bayen_US
dc.subjectGulf Intracoastal Waterway--Relocationen_US
dc.titleImpact of relocation of the Gulf Intracoastal Waterway on circulation and salinity in Matagorda Bay System, Texasen_US
Appears in Collections:Technical Report

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